Orginally a childrens televisionprogramme , the word has now been adopted as a form of negative Scottish slang. It can be used as in isult or as a negative term to describe someone/something.
Chagging is the portmanteau (combination) of choking and gagging. It is usually accompanied by an embarrassing loud, wet sound. Chagging has been referenced by Garfunkel and Oates in their "BJ Song."
Choogling as referred in swap rock music means to keep going,keep excelling,sorta like when someone says "keep on trucking",overall its in the same sense